Enable subpixel positioning for internal display with dsf larger than 1.0

ui/gfx/switches.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/switches.h"
 
 namespace switches {
 
 // The ImageSkia looks up the resource pack with the closest available scale
 // factor instead of the actual device scale factor and then rescale on
 // ImageSkia side. This switch disables this feature.
 const char kDisableArbitraryScaleFactorInImageSkia[] =
     "disable-arbitrary-scale-factor-in-image-skia";
 
 // Disables the HarfBuzz port of RenderText on all platforms.
 const char kDisableHarfBuzzRenderText[] = "disable-harfbuzz-rendertext";
 
-// Let text glyphs have X-positions that aren't snapped to the pixel grid in
-// the browser UI.
-const char kEnableBrowserTextSubpixelPositioning[] =
-    "enable-browser-text-subpixel-positioning";
-
 // Enables the HarfBuzz port of RenderText on all platforms.
 const char kEnableHarfBuzzRenderText[] = "enable-harfbuzz-rendertext";
 
 // Enable text glyphs to have X-positions that aren't snapped to the pixel grid
 // in webkit renderers.
 const char kEnableWebkitTextSubpixelPositioning[] =
     "enable-webkit-text-subpixel-positioning";
 
 // Overrides the device scale factor for the browser UI and the contents.
 const char kForceDeviceScaleFactor[] = "force-device-scale-factor";
 
 }  // namespace switches